From a058226576a9b83c9eccd18ead8464ed62ae7791 Mon Sep 17 00:00:00 2001
From: sxyazi <sxyazi@gmail.com>
Date: Wed, 8 Jan 2025 18:24:12 +0800
Subject: [PATCH] Extract the logic of comparing two `CharKind` instances into
 a method of `CharKind`

---
 yazi-core/src/input/commands/backward.rs |  8 +++-----
 yazi-core/src/input/commands/forward.rs  | 10 ++++------
 yazi-shared/src/chars.rs                 |  4 ++++
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/yazi-core/src/input/commands/backward.rs b/yazi-core/src/input/commands/backward.rs
index 2c7e72672..35f3d65b3 100644
--- a/yazi-core/src/input/commands/backward.rs
+++ b/yazi-core/src/input/commands/backward.rs
@@ -22,13 +22,11 @@ impl Input {
 		let mut it = snap.value[..idx].chars().rev().enumerate();
 		let mut prev = CharKind::new(it.next().unwrap().1);
 		for (i, c) in it {
-			let c = CharKind::new(c);
-			let new_char_kind =
-				if opt.far { (c == CharKind::Space) != (prev == CharKind::Space) } else { c != prev };
-			if prev != CharKind::Space && new_char_kind {
+			let k = CharKind::new(c);
+			if prev != CharKind::Space && prev.vary(k, opt.far) {
 				return self.move_(-(i as isize));
 			}
-			prev = c;
+			prev = k;
 		}
 
 		if prev != CharKind::Space {
diff --git a/yazi-core/src/input/commands/forward.rs b/yazi-core/src/input/commands/forward.rs
index 1fb18b509..97b08e43b 100644
--- a/yazi-core/src/input/commands/forward.rs
+++ b/yazi-core/src/input/commands/forward.rs
@@ -22,20 +22,18 @@ impl Input {
 		};
 
 		for (i, c) in it {
-			let c = CharKind::new(c);
-			let new_char_kind =
-				if opt.far { (c == CharKind::Space) != (prev == CharKind::Space) } else { c != prev };
+			let k = CharKind::new(c);
 			let b = if opt.end_of_word {
-				prev != CharKind::Space && new_char_kind && i != 1
+				prev != CharKind::Space && prev.vary(k, opt.far) && i != 1
 			} else {
-				c != CharKind::Space && new_char_kind
+				k != CharKind::Space && k.vary(prev, opt.far)
 			};
 			if b && !matches!(snap.op, InputOp::None | InputOp::Select(_)) {
 				return self.move_(i as isize);
 			} else if b {
 				return self.move_(if opt.end_of_word { i - 1 } else { i } as isize);
 			}
-			prev = c;
+			prev = k;
 		}
 
 		self.move_(snap.len() as isize)
diff --git a/yazi-shared/src/chars.rs b/yazi-shared/src/chars.rs
index 491389c21..e234b03cc 100644
--- a/yazi-shared/src/chars.rs
+++ b/yazi-shared/src/chars.rs
@@ -20,6 +20,10 @@ impl CharKind {
 			Self::Other
 		}
 	}
+
+	pub fn vary(self, other: Self, far: bool) -> bool {
+		if far { (self == Self::Space) != (other == Self::Space) } else { self != other }
+	}
 }
 
 pub fn strip_trailing_newline(mut s: String) -> String {